Bicycle



(No Model.)

H. W. BRITTON.

Bicycle.

No. 233,723. Patented Oct. 26,1880.

v INVENTOR I fiZtr/ azzh/ ATTORNEYS.

- WITNESSES:

UNTTED. STATES PATENT OF ICE.

HENRY W. BRITTON, OF STOUGHTON, MASSACHUSETTS.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 233,723, dated October26, 1880.

Application filed August 26,1880. (No model.)

To all whom it may concern Be it known that I, HENRY WILLIAMS BRITTON,of Stoughton, in the county of Norfolk and State ofMassachusetts, haveinvented a new and useful Improvement in Bicycles, of which thefollowing is a specification.

Figure 1 is a side elevation of the improvement. Fig. 2 is a sectionalsideelevation of a part of the improvement enlarged, taken through theline 00 a, Fig. 3. Fig. 3 is a rear elevation of apart oftheimprovement. Fig. 4 is a sectional plan view taken through the line yy, Fig. 3.

The object of this invention is to furnish bicycles so constructed thatthe rider can adjust his seat to keep it in proper position over thelarge wheel when riding upon inclined ground.

Similar letters of reference indicate corresponding parts. a

A represents the large wheel, and B the small wheel, of a bicycle. Tothe journals of the large wheel A are attached the cranks or foot-leversO. The journals of the large wheel A revolve in hearings in the lowerend of the standard D, whiclris slotted or forked to receive the upperpart of the large wheel A. The journals of the small wheel B revolve inhearings in the forked rear end of the backbone or reach E.

The backbone E is curved upward and forward to pass over the upper partof the large wheel A. The forward part of the backbone E passes throughan aperture in the standard D, and to its forward end is hinged theforward end of an arm, F. The bar or arm F passes back above the forwardend of the backbone E, and its rear end is notched, enters apertures inthe upper part of the standard D, and has a vertical hole formed throughits rear end, through which passes the screw G. The screw G is swiveledto the standard D by a set-screw, H, which enters a ringgroove in thescrew G, or by any other suitable means. The screw G also passes througha nut, I, inserted in a short slot in the backbone E. 1

The nut I is made in two parts, as shown in Figs. 2 and 3, so that itsparts can be inserted from the opposite sides of the backbone E. Theparts of the nut I that enter the backbone E are flattened upon theopposite sides, to prevent it from turning in the slot of the backboneE. v

To the upper end of the screw G is attached a crank-wheel, J, forconvenience in operating it.

To the backbone E, a little in the rear of the standard D, is attachedthe saddle K.

A spring, L, may be interposed between the saddle K and the backbone Eto give elasticity to the said saddle.

To the top of the standard D are attached the lever-handles M, by meansof which the machine is guided. With this construction, by turning thescrew G the forward end of the backbone E will be raised or lowered tobring the small wheel B closer to or farther from the large wheel A, andthus keep the saddle K in its proper position over the wheel A.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a bicycle, the combination, with the standard D and the backbone E,of the swiveled screw G and the nut I, substantially as herein shown anddescribed, whereby the backbone E can be adjusted to raise andlower thesmall wheel B, set forth.

2. In a bicycle, the combination, with the standard D, the backbone E,the swiveled screw G, and the nut I, attached to the backbone E, of thehinged arm F, substantially as herein shown and described, to hold thebackbone E in place, while allowing it to play upon the nut I, as setforth.

HENRY WVILLIAMS BRITTON.

Witnesses:

THOMAS BLANCHARD, ELLIs F. BRITTON.

